1. Defendant B Co., Ltd and C jointly and severally with the Plaintiff KRW 3,109,829,024 and KRW 1,151,758,210 among them.

1. Basic facts

A. The Plaintiff entered into an insurance contract for performance guarantee and joint and several sureties 1) is Defendant B Co., Ltd. (hereinafter “Defendant Company”).

(1) Each guarantee insurance contract with the following contents (hereinafter “each guarantee insurance contract of this case”) shall be “each guarantee insurance contract of this case,” and each contract shall be “Article 1, 2, and 3 guarantee insurance contract” in accordance with the sequence thereof.

(3) The Defendant Co., Ltd. newly built the Defendant Co., Ltd.’s debt guarantee insurance contract of each of the instant construction works under the Defendant Co., Ltd.’s indemnity insurance contract between the Plaintiff and the Defendant Co., Ltd., Ltd., on May 26, 2016 and December 31, 2017, among the instant construction works under the contract for construction works, the term of insurance coverage period of the insured was 1,309,600,000 to May 31, 2016.

3) The main contents of each of the instant guaranteed insurance contracts are as follows. Article 3 (Insurance Accidents and Termination of Main Contracts) The principal (Defendant Company) and the guarantor (Defendant C) confirm that the time of occurrence of an insured incident and the contents of the ordinary terms and conditions on the termination or cancellation of the prime contract are as follows, and they undertake to perform their obligations in good faith. 1. The insured event of the instant guaranteed insurance contract occurs when the principal fails to perform his/her obligations or obligations under the prime contract guaranteed by the company without justifiable cause. 2.